Make ComputeReceiverForNonGlobal faster
Make ComputeReceiverForNonGlobal faster

by checking instance type rather than constructor.

BUG=chromium:461734
LOG=n
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/953283004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26856}

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh